CN114436171B

CN114436171B - Fork truck portal

Info

Publication number: CN114436171B
Application number: CN202111621023.0A
Authority: CN
Inventors: 吴鹏; 祝刘龙; 刘克; 王旭东
Original assignee: Zhejiang Youen Intelligent Technology Co ltd
Current assignee: Zhejiang Youen Intelligent Technology Co ltd
Priority date: 2021-12-27
Filing date: 2021-12-27
Publication date: 2023-08-18
Anticipated expiration: 2041-12-27
Also published as: CN114436171A

Abstract

The application discloses a forklift mast, which relates to the technical field of forklifts, and comprises an outer mast, an inner mast and a fork frame, wherein the outer mast is connected with the inner mast in a lifting manner, the fork frame is arranged on the inner mast, and the forklift mast further comprises: the detection mechanism is used for assisting forklift shoveling or stacking; the carrying mechanism is arranged on the fork frame, the fixed end of the detecting mechanism is arranged on the carrying mechanism, and the detecting end of the detecting mechanism is used for scanning obstacles encountered during spading or stacking. The detection mechanism is started when the driver is inconvenient to get off, and starts to scan the obstacle and feeds back to the driver, so that the driver can conveniently avoid the obstacle, and the driver can conveniently drive to shovel or stack goods, and the driver does not need to get off to check and avoid the obstacle. The application has the effect of facilitating the shoveling or stacking operation of the driver.

Description

Fork truck portal

Technical Field

The application relates to the technical field of forklifts, in particular to a forklift mast.

Background

Fork truck portal frames are the main load-bearing structure of fork truck pick-up devices, also known as portal frames, which are also used widely in factories to transport goods.

Referring to fig. 1, a forklift mast is assembled at a forward end of a vehicle body 1, and includes an outer mast 2 hinged to the vehicle body 1 through a tilt cylinder, an inner mast 3 nested opposite to the outer mast 2, and a fork carriage 4 mounted on the inner mast 3. The fork frame 4 loads goods, and the fork frame 4 is lifted along the vertical direction of the outer door frame 2 along with the inner door frame 3, so that the car body 1 is controlled to advance or retreat, and further, the goods are conveniently scooped or stacked.

For the above-described related art, the inventors consider that: when the forklift gantry is used for shoveling or stacking, due to the fact that goods are accumulated and shielded, shoveling or stacking operation of a driver is easily affected.

Disclosure of Invention

In order to facilitate the scooping or stacking operation of a driver, the application provides a forklift mast.

The utility model provides a fork truck portal, its includes outer portal, interior portal and fork frame, outer portal links to each other with interior portal lift, the fork frame is installed in interior portal, still includes: the detection mechanism is used for assisting forklift shoveling or stacking;

the carrying mechanism is arranged on the fork frame, the fixed end of the detecting mechanism is arranged on the carrying mechanism, and the detecting end of the detecting mechanism is used for scanning obstacles encountered during spading or stacking.

By adopting the technical scheme, the detection mechanism is arranged on the carrying mechanism, and the carrying mechanism is arranged on the fork frame. When the forklift portal is used, the fork frame starts to scoop or stack goods, the detection mechanism is started when a driver is inconvenient to get off in the process of scooping or stacking the goods, the detection mechanism starts to scan obstacles and feeds back to the driver, and therefore the driver can conveniently avoid the obstacles, and the forklift portal is convenient for the driver to scoop or stack the goods, and finally has the advantage of being convenient for the driver to scoop or stack the goods.

Optionally, the fork frame comprises a first fork and a second fork with adjustable spacing;

the carrying mechanism comprises a stepping motor, a reciprocating screw rod connected with the stepping motor and a matching rod matched with the reciprocating screw rod, the stepping motor is arranged on a first fork, one end, far away from the reciprocating screw rod, of the matching rod is provided with a limiting piece, the matching rod is connected with a second fork through the limiting piece, and the limiting piece is used for limiting axial displacement of the matching rod.

Through adopting above-mentioned technical scheme, fork frame is because of the needs of in-service use, and interval adjustable fork one and fork two can shovel the goods of different specifications, for adapting to interval adjustable fork, remove the restriction of locating part and start step motor, step motor drive reciprocating screw, reciprocating screw drives cooperation pole axial displacement, consolidates the locating part again at last, and then the adaptation fork is adjustable, simultaneously because of carrying on the mechanism and connect fork one and fork two respectively for carrying on the structure has the advantage that improves fork frame wholeness ability again.

Optionally, the locating part includes displacement pole and nut, displacement pole one end links to each other with the cooperation pole is fixed, displacement pole other end clearance wears to locate fork two, and is fixed with fork two through the nut.

Through adopting above-mentioned technical scheme, during the installation locating part, make the displacement pole clearance wear to establish fork two earlier, later fix displacement pole and cooperation pole, and then realize with fork one and fork two adjustable connection become wholly, later remove the nut restriction, and then can make things convenient for step motor drive and then adapt to and adjust the fork frame, lock nut then realizes improving the wholeness of carrying mechanism and fork frame at last.

Optionally, the detection mechanism includes detection module, detection module is located between step motor and the cooperation pole, and detection module and reciprocal lead screw cooperation displacement.

By adopting the technical scheme, the detection module is matched with the reciprocating screw rod, so that the stepping motor is started, the stepping motor drives the reciprocating screw rod, and the reciprocating screw rod drives the detection module to scan obstacles in a reciprocating manner, so that the range of the detection module for scanning obstacles is improved, and auxiliary shoveling or stacking of cargoes is effectively carried out.

Optionally, the detection mechanism further comprises a damping cavity provided with a transparent area, and the detection module is located in the damping cavity.

Through adopting above-mentioned technical scheme, the shock attenuation chamber can hold detection module on the one hand, reduces the pollution of impurity in the external environment to detection module, and then improves detection module's ability of detecting the barrier, and transparent region is then adaptation detection module sweeps.

Optionally, a spring member is sleeved outside the reciprocating screw rod, one end of the spring member is fixed with the stepping motor, and the other end of the spring member is fixed with the damping cavity.

By adopting the technical scheme, the fork frame and the carrying structure are easy to be impacted due to the complexity of the operating environment, the spring piece can effectively slow down the axial impact, the use of the reciprocating screw rod is improved, and the service life of the carrying mechanism is prolonged.

Optionally, the inner wall of the damping cavity is square, and a displacement block is matched with the inner wall of the damping cavity and matched with the reciprocating screw rod;

the displacement block is provided with a containing cavity on the periphery, and the detection module is located in the containing cavity.

Through adopting above-mentioned technical scheme, hold the chamber and further protect detection module and do not receive the environmental impact, and the displacement piece is because of with square shock attenuation intracavity wall cooperation and with reciprocating screw cooperation, so the displacement piece can follow the length direction of multifilament pole and carry out reciprocating displacement, and then drive detection module and carry out the reciprocal obstacle of scanning comprehensively.

Optionally, the shock attenuation intracavity roof is equipped with the tooth condition, the displacement piece can be followed the length direction to multifilament pole and is slided relatively with the rack spare, the rack spare meshing has a gear spare one, gear spare one meshing has a gear spare two, gear spare two one end rotates with the chamber inner wall that holds and links to each other, gear spare two other end is fixed with the detection module.

By adopting the technical scheme, because the displacement block and the rack part are relatively displaced, the first gear part is relatively displaced relative to the rack part, and then the first gear part is driven to rotate, the second gear part is driven to rotate by the rotation of the first gear part, and then the detection module is driven to rotate, so that the scanning range is further improved by the rotation of the detection module.

In summary, the present application includes at least one of the following beneficial technical effects:

1. the detection mechanism is started when the driver is inconvenient to get off, the detection mechanism starts to scan the obstacle and feeds back to the driver, so that the driver can conveniently avoid the obstacle, the driver can conveniently drive the forklift or stack the goods, and the application has the advantage of conveniently forklift or stack the goods;

2. starting a stepping motor, driving a reciprocating screw rod by the stepping motor, driving the matching rod to axially displace by the reciprocating screw rod, and finally re-reinforcing a limiting piece to finish the adjustment of the adaptive fork, and simultaneously, connecting a first fork and a second fork by a carrying mechanism respectively to ensure that the carrying structure has the advantage of improving the overall performance of the fork frame;

3. the reciprocating screw rod drives the detection module to carry out reciprocating obstacle scanning, so that the range of the detection module for obstacle scanning is increased, and auxiliary shoveling or stacking of goods is effectively carried out;

4. the first gear piece is also relatively displaced with respect to the rack piece, so that the gear piece is driven to rotate, the gear piece is driven to rotate by one rotation of the gear piece, the detection module is driven to rotate, and the scanning range is further improved by the rotation of the detection module.

Drawings

FIG. 1 is a schematic view showing the structure of a forklift mast and a forklift body in the background of the application;

FIG. 2 is a schematic overall structure of an embodiment of the present application;

FIG. 3 is a schematic diagram showing the structure of a fork carriage, a detection mechanism and a carrying mechanism according to an embodiment of the present application;

FIG. 4 is a schematic diagram showing the structure of a detection mechanism and a carrying mechanism according to an embodiment of the present application;

fig. 5 is an enlarged schematic view of the structure at a in fig. 4.

Reference numerals illustrate: 1. a vehicle body; 2. an outer door frame; 3. an inner door frame; 4. a fork rack; 41. a frame body; 42. an electric push rod; 43. a first pallet fork; 44. a second fork; 5. a detection mechanism; 51. a detection module; 52. a damping cavity; 521. a transparent region; 522. a displacement block; 523. a receiving chamber; 524. a slip hole; 53. tooth conditions; 531. a rack bar; 532. a mounting rod; 54. a first gear member; 541. a shaft lever; 542. a flat gear; 543. a damping spring; 55. a second gear piece; 551. a driven rod; 552. an upper bevel gear; 553. a lower bevel gear; 6. a carrying mechanism; 61. a stepping motor; 62. a reciprocating screw rod; 63. a mating lever; 64. a limiting piece; 641. a displacement rod; 642. a nut; 65. and a spring member.

Description of the embodiments

The application is described in further detail below with reference to fig. 2-5.

The embodiment of the application discloses a forklift mast, referring to fig. 2, which comprises an outer mast 2, an inner mast 3, a fork frame 4, a detection mechanism 5 and a carrying mechanism 6, wherein one side of the inner mast 3 is slidably nested inside the outer mast 2, one side of the inner mast 3, which is away from the outer mast 2, is fixedly connected with the fork frame 4, and the inner mast 3 is lifted along the vertical direction of the outer mast 2, so that the fork frame 4 is lifted along with the lifting of the inner mast 3. The carrying mechanism 6 is arranged on the fork frame 4, the detecting mechanism 5 is arranged on the carrying mechanism 6, and when the fork truck gantry is used for carrying out shoveling or lowering goods, the detecting mechanism 5 can scan obstacles between stacks along with the fork frame 4 and feed back to a driver, so that the driver is assisted in working.

Referring to fig. 2 and 3, the fork frame 4 includes a frame 41, an electric push rod 42, and a first fork 43 and a second fork 44 with adjustable spacing, wherein the frame 41 is fixed with the inner gantry 3, two ends of the electric push rod 42 are fixedly connected to the frame 41, and the first fork 43 and the second fork 44 are respectively and movably connected to the electric push rod 42.

Referring to fig. 3 and 4, the mounting mechanism 6 includes a stepping motor 61, a reciprocating screw 62, a fitting lever 63, and a stopper 64, and the stepping motor 61 has excellent forward and reverse driving and self-locking functions. The stepping motor 61 is fixedly connected with the fork I43, the output end of the stepping motor 61 is fixedly connected with the reciprocating screw rod 62, and one end of the reciprocating screw rod 62 far away from the stepping motor 61 is in threaded fit with the matching rod 63. In the initial state, one end of the matching rod 63 far away from the reciprocating screw rod 62 is in abutting connection with the second fork 44, and when the distance between the two forks is adjustable, the matching rod 63 and the second fork 44 are in a state of being arranged at intervals.

One end of the mating rod 63 remote from the reciprocating screw 62 is fixedly connected to a limiting member 64. The limiting member 64 includes a displacement rod 641 and a nut 642, the displacement rod 641 is a threaded rod, one end of the displacement rod 641 is fixedly connected to the matching rod 63, and the other end of the displacement rod 641 passes through the fork two 44 in a gap and is reinforced by the nut 642. To accommodate the adjustable fork spacing, the nut 642 is moved and the stepper motor 61 is started, and when the fork spacing is adjusted, the stepper motor 61 is stopped and the nut 642 is again abutted against the two forks 44 to realize stable limiting and improve the integrity of the fork carriage 4.

Referring to fig. 4 and 5, the detection mechanism 5 includes a detection module 51, and the detection module 51 may be a thermal infrared imager, which has an imaging function and is very convenient for detecting obstacles.

The detecting mechanism 5 further includes a shock absorbing cavity 52, the main body of the shock absorbing cavity 52 is made of a material which is the same as the fork, the shock absorbing cavity 52 is formed with a transparent area 521, and the transparent area 521 can be formed by: a notch is formed in the damping cavity 52, and an acrylic transparent plate is used for thermoplastic fixation at the notch, so that the notch is closed.

The shock absorbing cavity 52 is in a strip shape, and the inner wall of the shock absorbing cavity 52 is square. The outer wall of one end of the damping cavity 52 is fixedly connected to one side of the first fork 43 facing the second fork 44, the other end of the damping cavity 52 horizontally faces the second fork 44, the outer bottom wall of the damping cavity 52 is higher than the bottom wall of the first fork 43 or the second fork 44, and the damping cavity 52 caused by collision between the bottom of the first fork 43 or the second fork 44 and foreign objects is weakened, so that the stability of the damping cavity 52 is improved.

The step motor 61 is fixedly arranged at one end in the shock absorption cavity 52, the step motor 61 is close to the fork one 43, the matching rod 63 is square and is matched with the shape of the inner wall of the shock absorption cavity 52, the matching rod 63 is partially positioned in the shock absorption cavity 52, the step motor 61 drives the reciprocating screw rod 62 to further realize axial displacement of the matching rod 63 relative to the shock absorption cavity 52, but the matching rod 63 cannot be separated from the shock absorption cavity 52 and cannot move to the step motor 61.

A displacement block 522 is also arranged in the shock absorption cavity 52, and the displacement block 522 is in threaded fit with the reciprocating screw rod 62, namely the reciprocating screw rod 62 penetrates through the displacement block 522. The shape of the displacement block 522 is adapted to the inner wall of the shock absorption cavity 52, the surface of the displacement block 522 is in sliding contact with the surface of the shock absorption cavity 52, the stepping motor 61 is started, the stepping motor 61 drives the reciprocating screw rod 62, the reciprocating screw rod 62 also drives the displacement block 522 to reciprocate along the length direction of the reciprocating screw rod 62, and note that the moving range of the displacement block 522 is always consistent with that of the transparent area 521.

The displacement block 522 is provided with a receiving cavity 523 at a side facing the transparent area 521, and the detection module 51 is located in the receiving cavity 523. Meanwhile, one end of the stepping motor 61 facing the displacement block 522 is fixedly connected with a spring piece 65, the spring piece 65 is a buffer spring, one end of the spring piece 65 far away from the stepping motor 61 is fixedly connected with the peripheral wall of the displacement block 522, and the spring piece 65 is sleeved outside the reciprocating screw rod 62. Spring member 65 can provide limited cushioning when shock absorbing cavity 52 is subjected to horizontal axial loads and improves the reciprocation of displacement block 522 and the probing operation of probe module 51. And the end of the stepping motor 61, which is away from the reciprocating screw rod 62, is also provided with a spring member 65, and the spring member 65 is horizontally fixed with the inner wall of the damping cavity 52, so that the reciprocating motion of the displacement block 522 is further improved.

The damping cavity 52 is also provided with a tooth condition 53, and the rack member 53 is arranged in parallel relative to the reciprocating screw rod 62. The tooth member 53 includes a horizontally disposed rack bar 531 and two mounting bars 532, and the two mounting bars 532 are vertically and fixedly connected to the ends of the rack bar 531, i.e., in a gate shape, respectively. One end of the two mounting rods 532, which is far away from the rack bar 531, is fixedly connected with the inner top wall of the shock absorbing cavity 52 in sequence, and can be mounted by welding. Meanwhile, the accommodating cavity 523 is provided with sliding holes 524 along opposite side walls of the length direction of the reciprocating screw 62, and the rack bar 531 sequentially slides through the two sliding holes 524.

The rack bar 531 is meshed with the first gear member 54, the first gear member 54 comprises a shaft 541, a flat gear 542 and a damping spring 543, the top of the shaft 541 is rotationally connected with the inner top wall of the accommodating cavity 523 through a bearing, the bottom end of the shaft 541 is coaxially fixed with the flat gear 542, and the flat gear 542 is meshed with the rack bar 531 for transmission.

The flat gear 542 is away from the bottom surface fixedly connected with gear piece two 55 of axostylus axostyle 541, and gear piece two 55 include driven lever 551, go up bevel gear 552 and go on the lower bevel gear 553 of meshing with last bevel gear 552, driven lever 551 one end pass through the bearing with hold chamber 523 week lateral wall rotation and be connected, driven lever 551 other end coaxial fixed wear locate down bevel gear 553 after with detection module 51 fixed connection. When the displacement block 522 moves, the flat gear 542 moves relative to the rack and then rotates, the flat gear 542 rotates to drive the driven rod 551 to rotate, the driven rod 551 rotates to drive the detection block to rotate reciprocally, the scanning range of the detection module 51 is further enlarged, and two different transmission structures can be realized only by one stepping motor 61.

The implementation principle of the embodiment of the application is as follows:

when the distance between the first fork 43 and the second fork 44 needs to be adjusted, the nut 642 is moved and the power supply of the stepping motor 61 and the power supply of the electric push rod 42 are started at the same time, the reciprocating screw rod 62 drives the matching rod 63 to axially displace, the matching rod 63 further drives the displacement rod 641 to axially displace relative to the second fork 44, and when the distance between the first fork 43 and the second fork 44 is adjusted, the stepping motor 61 is stopped and the nut 642 is locked. Meanwhile, due to the limiting effect of the nut 642, the matching rod 63 does not displace to influence the use of the fork carrier 4, and the integrity between the fork carrier 4 and the carrying mechanism 6 is maintained.

When the forklift gantry is used for shoveling or stacking cargoes, the control power supply of the detection module 51 is started firstly, then the stepping motor 61 is started as required, the reciprocating screw rod 62 drives the displacement block 522 to axially reciprocate, the flat gear 542 rotates and performs displacement motion relative to the rack bar 531, the driven bar 551 is further driven to rotate through the upper bevel gear 552 and the lower bevel gear 553, the detection module 51 is driven to rotate to perform reciprocating scanning and horizontal reciprocating scanning, obstacles encountered during shoveling or stacking are comprehensively scanned, the obstacles are conveniently avoided by drivers, and the forklift gantry is quite convenient.

The above embodiments are not intended to limit the scope of the present application, so: all equivalent changes in structure, shape and principle of the application should be covered in the scope of protection of the application.

Claims

1. The utility model provides a fork truck portal, includes outer portal (2), interior portal (3) and fork frame (4), outer portal (2) link to each other with interior portal (3) go up and down, fork frame (4) are installed in interior portal (3), its characterized in that:

further comprises: the detection mechanism (5) is used for assisting forklift loading or stacking;

the carrying mechanism (6), the carrying mechanism (6) is arranged on the fork frame (4), the fixed end of the detecting mechanism (5) is arranged on the carrying mechanism (6), and the detecting end of the detecting mechanism (5) is used for scanning obstacles encountered during loading or stacking of the shovel;

the fork frame (4) comprises a first fork (43) and a second fork (44) with adjustable spacing;

the carrying mechanism (6) comprises a stepping motor (61), a reciprocating screw rod (62) connected with the stepping motor (61) and a matching rod (63) matched with the reciprocating screw rod (62), the stepping motor (61) is arranged on a first fork (43), a limiting piece (64) is arranged at one end, far away from the reciprocating screw rod (62), of the matching rod (63), the matching rod (63) is connected with a second fork (44) through the limiting piece (64), and the limiting piece (64) is used for limiting axial displacement of the matching rod (63);

the detection mechanism (5) comprises a detection module (51), the detection module (51) is positioned between the stepping motor (61) and the matching rod (63), and the detection module (51) is matched with the reciprocating screw rod (62) for displacement;

the detection mechanism (5) further comprises a damping cavity (52) provided with a transparent area (521), and the detection module (51) is positioned in the damping cavity (52);

the inner wall of the damping cavity (52) is square, a displacement block (522) is matched with the inner wall of the damping cavity (52), and the displacement block (522) is matched with the reciprocating screw rod (62);

a containing cavity (523) is formed in the peripheral side of the displacement block (522), and the detection module (51) is positioned in the containing cavity (523);

the inner top wall of the damping cavity (52) is provided with a tooth condition (53), the displacement block (522) can slide relative to the rack part (53) along the length direction of the reciprocating screw rod (62), the rack part (53) is meshed with a first gear part (54), the first gear part (54) is meshed with a second gear part (55), one end of the second gear part (55) is rotationally connected with the inner wall of the accommodating cavity (523), and the other end of the second gear part (55) is fixed with the detection module (51).

2. A forklift mast as claimed in claim 1, wherein: the limiting piece (64) comprises a displacement rod (641) and a nut (642), one end of the displacement rod (641) is fixedly connected with the matching rod (63), the other end of the displacement rod (641) penetrates through the fork II (44) in a clearance way, and the displacement rod is fixed with the fork II (44) through the nut (642).

3. A forklift mast as claimed in claim 1, wherein: the reciprocating screw rod (62) is externally sleeved with a spring piece (65), one end of the spring piece (65) is fixed with the stepping motor (61), and the other end of the spring piece (65) is fixed with the damping cavity (52).